Use a Reference Triangle in an Appropriate Quadrant to Find $\cot ^ { - 1 } ( - 1 )$

question 164

Multiple Choice

Use a reference triangle in an appropriate quadrant to find the angle.
- $\cot ^ { - 1 } ( - 1 )$

• A) \(- \frac { \pi } { 4 }\)
• B) \(\frac { \pi } { 4 }\)
• C) \(- \frac { 3 \pi } { 4 }\)
• D) \(\frac { 3 \pi } { 4 }\)

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